Some time a go, when I was digging in my graveyard to get rid of some bodies, I stumbled over some clay tablets with strange geometrical patterns on it. After much research I found out that they belong to the Sredni Stog Culture of the DDII settlements at the Dnieper valley and constitute the oldest musical notations known to archeology. Interestingly, they are a couple of centuries older than any known text so far.
I spent the last months deciphering the instructions to recreate the music of these pre-archaic indo-europeans using modern means of sound creation and processing. Of course we do not know what instruments they originally used to play these notations and which frequency correlates exactly to which note in the sheet - future research may shed some light on this topic; all I can do at this moment is to give you my subjective interpretation of these clay tablets.